Planned maintenance activities fall into three categories: i) Periodic - necessary to ensure the reliability or to sustain the design life of an asset. ii) Predictive - condition monitoring activities used to predict failure. iii) Preventive - maintenance that can be initiated without routine or continuous checking (e.g. using information contained in maintenance manuals or manufacturers' recommendations) and is not condition-based.

IIMM

Planned maintenance is maintenance organised and carried out with forethought, controland the use of records to a predetermined plan.

LGAM

The maintenance organised and carried out with forethought, control and the use of records to a predetermined plan.

DERM

Repair work that is identified and managed through a maintenance management system (MMS). MMS activities include inspection, assessing the condition against failure breakdown criteria/experience, prioritising scheduling, actioning the work and reporting what was done 10 develop a maintenance history and improve maintenance and service delivery performance.

AIFMG 2009